Results 221 to 230 of about 15,103 (260)

Zoosporic fungi of Oceania. VI. Species with biflagellate zoospores

Mycopathologia et Mycologia Applicata, 1969
Several species of the Plasmodiophoraceae, Olpidiopsidaceae and Lagenidiaceae were isolated on various substrata from the soils of Oceania. Among these were two parasites of rotifer eggs,Lagenidium septatum andMyzocytium fijiensis. The former species is characterized primarily by septation of the thallus into segments which develop into resting spores ...
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Zoosporic fungi of Oceania

Archiv f�r Mikrobiologie, 1968
In a further study of the zoosporic fungi of Oceania three new species of Rhizophydium, R. rarotonganensis, R. angulosum, and R. condylosum were isolated on various substrata from soil. Rhizophydium rarotonganensis is a parasite of Nowakowskiella profusa and causes marked local hypertrophy of the rhizomycelium.
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Zoospores in Scenedesmus obliquus

Science, 1963
In basal medium without a nitrogen source a 3-day-old culture of Scenedesmus obliquus produced zoospores, which were biflagellated, had a parietal chloroplast, lacked a pyrenoid, and were apparently not walled. Identical results were produced with new clones. A reconsideration of the relationships and classification
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Fine structure ofCylindrocapsa zoospores

Protoplasma, 1976
Quadriflagellate zoospores from an isolate ofCylindrocapsa geminella have been studied ultrastructurally. Each swimming zoospore is enclosed within a delicate, loose-fitting, outer investment which in grazing tangential section exhibits a pattern resembling wire gauze.
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The zoospore of Olpidium radicale

Transactions of the British Mycological Society, 1978
An ultrastructural study is presented of the unusually large zoospore (c. 8 μm long) of the root-inhabiting uniflagellate Phycomycete, Olpidium radicale Schwartz & Cook (synonyms: Olpidium cucurbitacearum Barr and Pleotrachelus bornovanus Saht.). The study has revealed ultrastructural characters unique to this organism: (1) the axonemal fibres extend ...
L. Lene Lange, Lauritz W. Olson
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Chemotaxis of Zoospores for Root Exudates

Science, 1961
A chemotactic response of the zoospores of a soil-inhabiting plant pathogenic fungus, Phytophthora cinnamomi, for roots of avocado seedlings was observed. The chemotaxis of the zoospores and chemotropy of their germ tubes were directly related to infection and disease production.
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Vertical distribution of kelp zoospores

Phycologia, 2011
Abstract Cie D.K. and Edwards M.S. 2011. Vertical distribution of kelp zoospores. Phycologia 50: 340–350. DOI: 10.2216/10-48.1 The widely accepted theory of kelp propagule dispersal is that reproductive zoospores are released near the benthos and passively dispersed horizontally via advective and diffusive transport.
Damien K Cie, Matthew S. Edwards
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Green matter, zoospores, and diatoms

2023
Abstract The gravest risks to a sharp plant-animal dichotomy arose at the interface between infusoria and algae. This chapter treats four case studies: the “green matter” debate initiated by Priestley in the 1770s; the recognition of motile “zoospores” after 1803; experiments on algal metamorphosis from the 1810s through the 1840s; and ...
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Structure of Labyrinthula sp. Zoospores*

The Journal of Protozoology, 1968
SYNOPSIS. A species of Labyrinthula closely resembling L. algeriensis was isolated from marsh grass, Spartina alterniflora. Zoosporulation was obtained in ∼50% of the cultures, which were grown on a modified Vishniac medium, when yeasts were used as food organisms; when the temperature was ∼22 C; when thiamine (0.2 mg/l, biotin (1 μg/l, Ba (1 μg/l ...
JAMES P. AMON, FRANK O. PERKINS
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Zoospore discharge in Thraustochytrium striatum

Transactions of the British Mycological Society, 1974
The development of the sporangial wall in Thraustochytrium striatum Schneider has been studied by light, scanning and transmission electron microscopy. The wall is multilamellate and fragments at maturity to release the zoospores. Use of the term deliquescence to describe wall behaviour at spore release is shown to be incorrect and the term ...
J.L. Harrison, E.B. Gareth Jones
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